Do not collect disks with si

[akoptelov]

I didn't find anything that might be missing if System::new() is used instead of System::new_all().

See new() vs new_all()

Fix: #266

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e297324) 97.76% compared to head (6fb932a) 97.94%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #267      +/-   ##
==========================================
+ Coverage   97.76%   97.94%   +0.18%     
==========================================
  Files          24       24              
  Lines        1609     1609              
==========================================
+ Hits         1573     1576       +3     
+ Misses         36       33       -3     

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[CraZySacX]

I like this idea, but I think we need to make it configurable. Using new() by itself on the latest version of sysinfo shouldn't query the disks anymore. There is a new Disks interface that takes care of that which currently isn't being used.

I'll create a PR from this one and make the refresh configurable to make this feature more flexible.

[CraZySacX]

This has been implemented.

[akoptelov]

I'll create a PR from this one and make the refresh configurable to make this feature more flexible.

Great, thanks!